Press for the molding of bicycle and other tires.



No. 890,409. PATENTED JUNE 1908. W. H. COX. PRESS FOR THE MOLDING OP BICYCLE AND OTHER TIRES.

APPLICATION F ILED JULY 6. 1907.

L J f y WILLIAM HENRY COX, 0F ECOLES, ENGLAND.

PRESS FOR THE MOLDING BICYCLE AND OTHER TIRES.

Specification of Letters Patent.

Patented June 9, 1908.

Application filed. July 6, 1907. Serial No. 382,523.

To all whom it may concern:

Be it known that l, VVILLIAM IIENRY (oX, a subject of Ilis Majesty the King of'Gre-at Britain and Ireland, residing at-Priory Bank, Wellington Road, Eccles, in the connq of liancaster, England, have inv'cnted certain new and useful Improvements in Presses for the Molding of Bicycle and other 'lires, of which the following is a specification, reference being bad therein to the :wcompanying drawings.

My invention relates to improvements in presses for the molding of bicycle and other tires before vulcanization, and has for its object the construction of a circular or cylindrical press the force of which acting in aradial direction acts on an elastic and pliable cushion, which, following the line of least resistance, insures an even pressure overall parts of the tire, to press firmly .togetherthe materials of which the tire is made; and at the same times impresses upon the rubber' compound with which the tire is covered any shape or design which may be engraved on the surface of the mold.

In order that mydnvention may be clearly understood, reference may be had to the accompanying sheet of drawings, in which Figure 1 is a sectional elevation of the improved means, and Fig. 2 is an external plan view.

Similar letters of reference are used to indicate like parts in both views.

A press according to my invention comprises a hollow annulus orring of metal 1,

having a channel 2 round its periphery so as to form a chamber to receive the'cushlon 3 forces the cushion 3 outwards, and causesthe same to come in contact with the tire 6 which is placed. in position around. it, and thereby presses the said tire against .the face of the mold 7. This mold, which consists of a hollow metal cylinder having the shape and design to be imparted to the tire engraved on its insidecircumference, is.provided with a steam space 8 for the purpose of keeping the mold warm, so that a quicker and sharper impression of the design is imparted to'the plastic india-rubbcr surface with which the tire is covered, and the better amalgamation I low the level of the bottom of the mold 7 by any mechanical or other contrivance, so as to allow the tire to be placed in osition withi in the mold. The hollow annu us or ring 1 is then raised again into its former position, and the pressure, being admitted into the endless tube 4 through the pipe 5, inflates the said tube and forces the cushion 3 outwards in a radial direction until it comes in contact with the tire 6 and presses it firmly against the mold 7. a few minutes, the pressure is removed, when the elasticity of the india-rubber cushion causes it to recover its normal dimensions and allows the cylinder 1 to be again lowered for the removal of the now molded tire. The tire is then cured or vulcanized openly in the usual way except that no wrapping is required, thereby saving considerably in labor and material.

What I claim is In a tire press, an'annulus or ring provided with a perlpheral annular chamber open at the outer side, an annular inflatable tube within said chamber, a 'pipe carried by the annulus and communicating with said inflatable tube whereby the samemay be inflated, an annular cushion within said chamber surrounding the inflatable tube and engaging the same, and a hollow annular mold adapted to encircle the annulus, sub stantially as described.

In testimony whereof I affix my signature in the presence of two witnesses.

WILLIAM HENRY COX. Witnesses:

J. R. LUorEN,

F. MITCHELL. I

The tire having been under pressure. 

